Thermostatic valve.



R. T. MCCONLOGUE.

THERMOSTATIC VALVE. APPLIYCATION FILED MAR. Il, 1915. 1,161,060,

Patented Nov. 23, 1915. J4

8 M w W ROBERT T. IVICCONLOGU, OIE-FREEPORT, NEW YORK, ASSGNR OF ONE-HALF TO nonnnr n. rammen, or

rnnnron'r, New Yoan.

TEERMOSTATIG VALVE.

menace.

Specication ci Letters Patent.

Patented Nov., 23, i915.

Application filed March 11, 19H. Serial No. 13,740.

the mold. IThese burners maintain different temperatures. IThe melting pot temperature isv considerably lower than the temperature ofthe lip through which the. metal is discharged into the mold. The burner under the pot is considerably larger than the lip burner and, of course, requires 'a larger supply of gas. Heretofore 1t has been extremely diiiicult to maintain the two burners properly supplied with gas so that the temperature of the lip would at all times be higher than the temperature of the pot. rlhe supply of gas to each burner'has heretofore been controlled by a separate valve. There hasbeen no means by which the temperature of the lip could be controlled from the meltingpot. ln view of the fact that the temperature of the lip must be higher than the temperature of the molten metal in order thatlthe metal will properly discharge through the lip, it is very desirable that the supply of gasto the lip burner should be controlled by the temperature of the molten metal in the melting pot.

One of the main objects of thi'sinvention is to provide a thermostatic valve adapted to control the supply of gasv to two or. more burners, said burners being adapted to produce different temperatures.

Another object of the invention is to provide a valve adapted to control the supply of gas to two or more burners, said burners receiving different quantities of gas and each burner having a pilot flame.

Another object of the invent-ion is to proy vide a valve adapted to control' the supp-ly of gas to two or more burners, said valve being adapted to eut oli both burners from the gas supply, except that a small quantity of gas will be fed to a pilot fiame at each burner at all times, whether the valve be opened or closed.

There are ma??? other objects and advauw tages of theinvention, which will be more fully hereinafter set forth and relating to the thermostatic element and the par-ts 'nnmediately adjacent thereto and operated thereby. y i

In the drawings, Figure 1 is a vertical sectional view of the thermostatic element and the controlling valve connected therewith, taken on the line I-l of Fig. 2; Fig.

2 a transverse sectional view ofthe valve taken on the line l--II of Fig. l; and Fig.

seat.

Referring to the various parts by numerals, 1 is the gas supply pipe which may be of any suitable form and may be provided with suitable swivel joints 2 to enable the valve and its connected parts to be properly arranged in any machine to which it is to be attached. The valve casing 3 is provided with a lower gas chamber 4f to which the gas supply pipe 1 is connected. Fitted in the valve casing and serving as a closure for the gas chamber 4 is a downwardly tapered plug 6. -In the lower face of 'this plug is formed two annular channels 7 and 8. -The walls of these channels are tapered to their lower ends to forni annular knifef3 a plan view of the under side of the valve lac edge valve `seats 9 and 10, the seat 10 being the `separatime; Wall between channel 7' and channel 8. y

'The valve casing 3, on opposite'sides of the chamber i, is provided with two inlet passages 11 and 12, said passages extending ends of the passages lland 12, respectively,

to the burners. Gas constantly passes through ports l5 and 16 to supply the pilot. lights at the burners, end these ports are regulated by needle valves 19 of any suitable construction. Supply pipe 18 is connected to the lip burner and the quantity of gas supplied to said burner when the valve is open is regulated bymeans of a needle valve 2O which is adapted to control the outlet from port 1e.

To close the channels 7; and 8 simultaneously and thereby shut off the main supply of gas to the burners I provide'a metal disk valve 21 carried by a stem 22 which .extends upwardly through the plug 6. This valve is maintained seated by means of a spring 23 located in the main gas chamber 4c. It. will be readily understood kthat when this valve is seated the channels and 8 are cut off from communication with the chamber 4, and also passage 11 is sealed from passage 12 except for the small amount of gas passing from the main gas chamber through the pilot valve ports 15 and 16. rlhe valve stem 22 is packed gas-tight by means of a series of annular grooves 22a formed in the bearing 22b of said stem. These grooves lare filled with oil or other similar material and prevent the escapel of gas along the stem from chamber 8. t

The thermostatic element conslsts of an iron container 24 which is threaded at its `upper end inte a lateral" extension 25 of the plug 6 and held adjustably therein by means of a lock nut 26. In thls container 1s arranged a long carbon rod 27 on the upper end of which rests a metal block 28, the

vupper end ofwhich is adapted to constantly vto bear against the upper end of the valve lrod 22, said lower end being made semispherical as shown. To adjust the screw in the end of the said arm I provide an adjust-v ing device 33 carried by the screw and adapted to be swung from side to side toI increase or decrease the projection of the screw below the lever 30.

his regulates the extent of opening of the valve 21. The adn justing deviceA5 33 may be arranged to be moved over a scale arranged on the side of lthe casing near the upper end thereof, said scale indlcating the degree of opening. of

`,tl1e'valve and the resulting temperatures in the melting pot and at the discharge lip.

In order to protect the parts of the apparatus I provide an lnclosingr casing 3i for the lever 30 and the upper end of the thermo-static elements; and also a pivoted cap 35 which incloses the upper end of the valve stem, the regulating screw and the screw adjusting device. The plug 6 lis held in place by means of bolts and nuts 36.

The operati-on of the device may be briefly described as follows: The thermostatic container element is placed in the melting pot of a line or other casting machine and the pipes 17 and 18 properly connected to the respective4 burners. When the temperature in the melting pot has reached the desired point the iron container 24 has expanded sufficiently to permit the carbon rod and the operating block to drop away from the short arm of the lever. This permits the spring 23 to lseat the'valve disk on the knife-edge seats 9 and 10, thereby shutting ofi' gas from the norts 13 and 14. Gras will continue to iow through the nilot light ports 15 and 16 in the desired quantity. When the temperf ature ofthe molten metal in the melting pot is reduced by the addition of metal the container 24 will contract and thereby force upwardlv the carbon rod and the operating block, and. as the block bears constantly on the short arm of the lever 30 said lever will be swung on its pivot and the valve 21 depressed against the Yaction of the spring 23., Gas will again flow through the channels 7 and 8 and prts 13 and 141.110 the burners in the desired regulated quantities. By moving the adjusting device 33, the extent of movement of the valve 21 may be varied to thereby vary vthe quantity of gasv` supplied 'to the burners., By reason of, the restricted port 14 andthe needle valve 20the quantity of gas suppliedv to the 'lip burner will be smaller than -that supplied to the melting pot burner, the said quantities being maintained in a certain proportion to each other throughout all the variations in the valve opening. It will, of course, be understood that the carbon rod expands much less than the iron container under the same degree of heat and that consequentlythe Icarbon rod` will be given a vertical movement by. reason of the expansion and contraction'of the iron container 24. l

It will, of course, be understood that this thermostatic valve may be used to control K the supply of gas to any number of burners closed upon an increase of temperature in said elements.

2. A thermostatic valve comprising a valve caslng formed with a gas chamber, a plurality of independent ports leading from said chamber, a gas supply leading to yio said chamber, a single valve to close communication between said chamberand all of the said ports simultaneously. and also at the same time to close ccmmunication between the ports, thermostatic elements, and means connecting said elements to said -valve whereby an'sincrease of temperature in the elementsfwill close the valve and a reduction 1n the ,temperature of the elements will open "said valve.

" 3. A thermostatic valve comprising a the said va ve, thermostatic elements, and,

means' operatively connecting said elements to said valve whereby an increase of tem# perature in the elements will close the valve and a reduction in the temperature of the elements will open said valve.

4c. A thermostatic valve comprising a valve casing formed with a gas chamber, a

plurality of independent ports leading from said chamber, a gas supply leading to said chamber, a single valve to close communication between said chamber and all of the ports simultaneously and also at the same time to close communication between the ports, pilot light ports leading' from the gas chamber, said ports being uncontrolled by ther said valve, thermostatic elements,

and means connecting said elements to saidA valve whereby an increase'of temperature 1n theelements will close the valve and a reduction in the temperature of the ele- I ments will open said valve.

5. A thermostatic valve comprising a valve casing formed wlth 'a gas chamber, aplurality of concentric, annular channels formed in the top of the gas chamber, the

walls around said chambers forming valve seats at their lower edges, a singlel valve in cut ofi' from the gas chamber and from each other.

6. A thermostatic valve comprising a valve `casing formed with a supply chamber, a plurahty of independent ports leading from said chamber, a single valve to close communication between said chamber and the -ports simultaneously and yyalso at the saine time to close communication between the ports, and thermostatic means for operatlng said valve.

7. A' thermostatic valve comprising a valve casing formed with a gas chamber, a plurality of independent ports leading from sald chamber, a passage for each of said ports adaptedto ber connected to any independent burner, aV valve to close communication between. said chamber and the ports and also to close communication between the ports, pilot light ports between the gas chamber and the outlet passages, said pilot light ports being uncontrolled by the said valve, and thermostatic means for operating said valve.

8. A' thermostatic valve comprising a valve casing formed with a gas chamber, a plurality of independent passages adapted to be connected yto independent burners, a plurality of annular channels in the top of the gas chamber, a supply port leading from r each channel to each of said passages, a pilot light port leading from the chamber to each of said passages, a Valve to close communication between the chamber and the channels and between the channels, the pilot light ports being uncontrolled by said valve, thermostatic elements, and an operating lever operatively connecting 'said elements to the valve.

9. A thermostatic valve comprising a valve casing formed with a gas chamber, a plurality of independent passages adapted to be connected to independent burners, a plurality of annular channels in the top of the gas chamber, a supply port leading from each channel to each of said passages, a pilotlight port leading from the chamber to each of said passages, a valve to close communication between the chamber and the channels and between the channels, the pilot light ports being uncontrolled by said valve, thermostatic elements, an operating lever operatively connecting said elements to the valve,`and means for adjusting the operative connection between the operating lever and the valve.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses.

ROBERT T. MCCONLOGUE. Witnesses:

F. R. ,Mining MINERVA VAN ALEN. 

